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Issue ESAIM: Proc.
Volume 1, 1996
Vortex flows an related numerical methods II
Page(s) 363 - 375
DOI http://dx.doi.org/10.1051/proc:1996040

ESAIM: Proc., 1996, Vol. 1, pp. 363-375
DOI: 10.1051/proc:1996040

Numerical simulation of a thermodynamic refrigerator

Aniruddha Worlikar1, Omar M. Knio1 and Rupert Klein2

1  Department of Mechanical Engineering The Johns Hopkins University Baltimore, MD 21218, USA
2  Fachbereich Sicherheitstechnik Bergische Universität, Gauß-Str. 20 D-42097 Wuppertal, Germany


Abstract
A thermoacoustic device consists of two main components: (1) a resonance tube where the flow is characterized by length scales of the order of the acoustic wavelength, and (2) a stack of plates which are separated by distances much smaller than the acoustic wavelength. This effort focuses on the development of numerical schemes which overcome this scale disparity in an efficient manner. Two approaches are discussed in the paper. The first is a multiple-pressure-variable approach that is suitable for the simulation of resonance tube acoustics and for analyzing interactions between heat addition and long waves. The second is a multi-dimensional model of the stack region which is based on fast solution of the zero-Mach-number conservation equations.



© EDP Sciences, ESAIM 1996

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